I have a question regarding the Persian Cavalry figures (APE20 - Persian Cavalry): what are the cavarlymen holding in their left hands?  At first glance, I thought it was a strangely shaped shield, but the figures arm seems to be in the wrong position.  I'm also thinking it might represent the outline of a bow.  Is there anyone who has painted these figures that can tell me for sure?

I'm sorry, made a mistake with my initial post.  I meant to inquire about the  APE12 - Persian/Median Cavalry figures.  

I painted a bunch of those recently. I don't recall anything actually in their left hands, but on that side of the horse they have their gorytos - a combined bow case and quiver. It does look a bit like an oddly shaped and placed shield, but actually very handy for quick access to their bows. 

Many thanks for the response. Now it makes sense.